Feuerbach's theorem

the theorem that the nine-point circle of any triangle is tangent to the incircle and to the three excircles
Intangible theorem Q3527074
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Feuerbach's theorem

Summary

Feuerbach's theorem is a theorem[1]. It draws 7 Wikipedia views per month (theorem category, ranking #270 of 1,306).[2]

Key Facts

  • Feuerbach's theorem's instance of is recorded as theorem[3].
  • Karl Wilhelm Feuerbach is named after Feuerbach's theorem[4].
  • Feuerbach's theorem's has effect is recorded as Feuerbach point[5].
  • Feuerbach's theorem's has effect is recorded as Feuerbach triangle[6].
  • Feuerbach's theorem's statement describes is recorded as triangle[7].
  • Feuerbach's theorem's Google Knowledge Graph ID is recorded as /g/120xpbfp[8].
  • Feuerbach's theorem's MathWorld ID is recorded as FeuerbachsTheorem[9].
  • Feuerbach's theorem's maintained by WikiProject is recorded as WikiProject Mathematics[10].
  • Feuerbach's theorem's ProofWiki ID is recorded as Feuerbach's_Theorem[11].

Why It Matters

Feuerbach's theorem draws 7 Wikipedia views per month (theorem category, ranking #270 of 1,306).[2] It has Wikipedia articles in 9 language editions, a strong signal of global cultural recognition.[12]

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Feuerbach's theorem. Retrieved May 3, 2026, from https://4ort.xyz/entity/feuerbach-s-theorem
MLA “Feuerbach's theorem.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/feuerbach-s-theorem.
BibTeX @misc{4ortxyz_feuerbach-s-theorem_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Feuerbach's theorem}}, year = {2026}, url = {https://4ort.xyz/entity/feuerbach-s-theorem}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Feuerbach's theorem — https://4ort.xyz/entity/feuerbach-s-theorem (retrieved 2026-05-03)

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